Inventor

GUO GUOXIAO

US79 patents

⚠️ This page may combine multiple inventors who share the name “GUO GUOXIAO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

GUO GUOXIAO

WESTERN DIGITAL TECH INC

Disk drive comprising slanted line servo bursts having a varying tilt angle

Disk drive rotating phase based servo bursts based on radial location of head

Disk drive excluding servo sub-bursts when computing position error signal

Correcting servo sectors in a disk drive

Disk drive comprising slanted line servo burst sets offset radially

Disk drive comprising slanted line servo bursts having reverse polarity segments

System and method for identifying track squeeze errors (TSEs) of a disk of a disk drive

Servo track squeeze compensation in a disk drive

Disk drive rewriting servo sectors by writing and servoing off of temporary servo data written in data sectors

Disk drive writing wedge RRO data along a sinusoidal path to compensate for reader/writer offset

Disk drive adjusting rotation speed of disk to compensate for blind area when measuring frequency response of servo control system

Disk drive writing wedge RRO values in a butterfly pattern

Data storage device employing adaptive feed-forward control in timing loop to compensate for vibration

Data storage device comprising dual read sensors and dual servo channels to improve servo demodulation

Data storage device reading servo sector while writing data sector

Disk drive compensating for cycle slip of disk locked clock when reading mini-wedge

Data storage device filtering burst correction values before downsampling the burst correction values

Media based cache for data storage device

Data storage device writing multiple burst correction values at the same radial location

Method to measure thermal protrusion by sensing spacing change due to pre-lasing

Disk drive filtering disturbance signal and error signal for adaptive feed-forward compensation

Determining laser induced thermal protrusion and laser threshold in heat-assisted magnetic recording (HAMR) data storage

Disk drive determining frequency response of actuator near servo sample frequency

Continuous frequency servo in a data storage device

Data storage device with servo field dependent write boost

Data storage device with split burst servo pattern

Hybrid data storage system with private storage cloud and public storage cloud

Data storage device pre-biasing a spin torque oscillator prior to a write operation

Hybrid data storage system with private storage cloud and public storage cloud

Disk drive compensating for non-linearity of a head based on a fly height of the head

Data storage device with enhanced management of laser pre-bias and logic block addressing in heat-assisted magnetic recording

Energy-assisted magnetic recording data storage device with opportunistic boosted laser pre-biasing

Disk drive adjusting estimated servo state to compensate for transient when crossing a servo zone boundary

GUO GUOXIAO

Disk drive employing radially coherent reference pattern for servo burst demodulation and fly height measurement

Disk drive biasing sync pattern of an extended sync mark

Zoned servo system

Disk drive correcting high order gray code using track estimator and decoding low order track code separately

Disk drive correcting an error in a detected gray code

AGENCY SCIENCE TECH & RES

Active control system and method for reducing disk fluttering induced track misregistrations

Detection of track misregistration within user data channel

GUO WEI

Disk drive adjusting servo timing to compensate for transient when crossing a servo zone boundary

YU JIE

Disk drive defining non-circular data tracks relative to a rotation axis of the disk

XI WEI

Disk drive adjusting servo burst signals to compensate for radial velocity of the head

SMITH STEVEN C

Disk drive employing overlapping servo zones to facilitate servo zone crossing

WANG HONGE

Disk drive estimating reader/writer gap across servo zones

GIOVENZANA DAVIDE

Disk drive increasing capacity by adjusting a servo gate during write operations

WONG WAI EE

Disk drive increasing bandwidth of cutoff filter while reading servo sector preamble

INST DATA STORAGE

Head suspension assembly with piezoelectric beam micron actuator

UNIV CALIFORNIA

Data storage devices and methods with frequency-shaped sliding mode control

SEAGATE TECHNOLOGY LLC

Flexural pivot for rotary disc drive actuator